Vietnamese female commissioned officers of the signal force march during a parade marking their 70th National Day at Ba Dinh square in Hanoi, Vietnam September 2, 2015. (Photo by Reuters/Kham)

A labourer packs incense in preparation for Tet, the traditional Vietnamese lunar new year, in Hong Chau village, outside Hanoi January 29, 2015. Tet is from February 14 till 24. (Photo by Reuters/Kham)

Children wave Vietnamese and American flags while waiting for arrival of U.S. President Barack Obama (not pictured) before a welcoming ceremony at the Presidential Palace in Hanoi, Vietnam May 23, 2016. (Photo by Reuters/Kham)

A woman in costume of the Prosperity and Wealth God wears a protective face mask at a gold shop in Hanoi, Vietnam, Monday, February 3, 2020. It is a tradition for many Vietnamese to buy gold on the tenth day of the lunar new year – the day of Prosperity and Wealth God, for good luck. (Photo by Hau Dinh/AP Photo)

South Vietnamese forces escort suspected Viet Cong officer Nguyen Van Lem (also known as Bay Lop) on a Saigon street February 1, 1968, early in the Tet Offensive. Moments later, Lem was executed by Gen. Nguyen Ngoc Loan, chief of the national police. (Photo by Eddie Adams/AP Photo)

A woman drives a scooter with her dog in Hanoi on December 10, 2021, as Vietnamese officials in the central city of Hoi An announced it was set to be the country's first dog and cat meat free city. (Photo by Nhac Nguyen/AFP Photo)

A Vietnamese artist acting as a medium, performs the “Hau Dong” ritual at Viet Theatre in Hanoi January 16, 2016. For the first time, Vietnamese drama director Viet Tu has brought the ritual from religious temples to the theatre partly to draw tourists. The “Hau Dong” is a ritual where a medium puts on special costumes and tells stories of gods and heroes while being accompanied by “Chau Van” music, as part of the act of Dao Mau – the worship of mother goddesses in Vietnam. It is believed that the medium is capable of having a direct contact with spirits during the ritual. (Photo by Reuters/Kham)

Vietnamese dentist Tran Phuong Thao and her husband Tran Minh Hieu wearing protective masks, kiss at their wedding ceremony during the coronavirus disease (COVID-19) outbreak in Hanoi, Vietnam on January 28, 2021. (Photo by Kham via Reuters)